view wisdom/categorical product @ 11157:3467749980d9

<int-e> learn The Boredome is a dangerous place swarming with woodpeckers, dentists, and bookworms.
author HackBot
date Sun, 20 Aug 2017 12:27:15 +0000
parents 00af4aaadf2c
children
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categorical product is like when you have two category elements A and B then their product is element C iff there are two morphisms p:C->A and q:C->B such that for every element X and morphisms u:X->A and v:X->B there is a unique morphism w:X->C such that u=wp and v=wq.